The second round review of senior three mathematics should achieve three purposes: first, from comprehensive basic review to key review, refine and grasp the key and difficult points; The second is to apply the basic knowledge of the first round of review to the actual test questions, and transform the knowledge already mastered into the actual problem-solving ability; Third, we should grasp the characteristics and laws of each question type, master the problem-solving methods, and initially form the test-taking skills. The second round review of senior three mathematics is to consolidate and strengthen the knowledge points of college entrance examination on the basis of the first round review, which is a key stage for candidates to greatly improve their mathematics ability and academic performance. The guiding ideology of review in our school at this stage is: consolidation, perfection, synthesis and improvement. As far as most students are concerned, consolidate, that is, consolidate the results of the first round of unit review, put the consolidation of the three basics (basic knowledge, basic methods and basic skills) in the first place, and strengthen the systematization and memory of knowledge; Perfection means that through this round of review, the system of mathematical thought, knowledge law and method application is further established and constantly summarized and improved; Comprehensive, that is, in classroom and extracurricular training, reduce the number of questions with a single knowledge point, enhance the connection between knowledge points, and enhance the comprehensiveness and flexibility of questions; Improvement is to further cultivate and improve the ability to read and summarize mathematical problems, analyze and solve problems. Therefore, the second round review of senior three mathematics requires higher requirements for classroom listening, proper note-taking, extracurricular training, independent understanding and summary, and there is a saying that "the second round looks at the level"! It is the most "practical" stage.